What does the 'fu' indicator on the charging screen mean?
On the JR07 TWS Wireless Headset charging case, the indicator "FU" (often appearing as a stylized "FU" or "100") signifies that the charging case…
Manuals+ Q&A
Assorted JR07 TWS Wireless Headset User Manual — questions & answers
Read product questions and troubleshooting answers linked to Assorted JR07 TWS Wireless Headset User Manual.